package com.itheima.reggie.common;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import java.sql.SQLIntegrityConstraintViolationException;

//全局异常处理
@ControllerAdvice(annotations = {RestController.class, Controller.class})//此注解下会被处理
@ResponseBody
@Slf4j
public class GlobalExceptionHandler {
    //异常处理方法
    @ExceptionHandler(SQLIntegrityConstraintViolationException.class)//处理此类异常
    public R<String>exceptionHandler(SQLIntegrityConstraintViolationException ex){
        log.error(ex.getMessage());//输出异常信息
        if(ex.getMessage().contains("Duplicate entry")){//contains:包含 Duplicate:错误信息关键字 如果包含就继续往下走
            String[] split = ex.getMessage().split(" ");
            String msg = split[2] + "已存在";
            return R.error(msg);
        }
        return R.error("未知错误");
    }

    //处理自定义异常
    @ExceptionHandler(CustomException.class)
    public R<String>exceptionHandler(CustomException ex){
        log.error(ex.getMessage());
        return R.error(ex.getMessage());
    }
}
